Indicator



March 17, 1931 J, J. N. VAN HAMERsvL-:LD 1,796,639

INDICATOR Filed Dec. 23. 1929 I5 Sheets-Sheet l March 17, 1931. J. J. N. VAN HAMERSVELD 1,796,539

INDICATOR Filed Deo. 23, 1929 3 Sheets-Sheet 2 March 17, 1931 .1. .1. N. VAN HAMERSVELD 1,796,639

INDICATOR Filed Dec. 23, 1929 3 Sheets-Sheet 3 -rzv @rc1-LOIS Patented Mar. 17, 1931 UNlTED STATES PATENT OFFICE JOHN J. N. VAN HAMERSVELD, 0F CLEVELAND HEIGHTS, OHIO, ASSIGNOR T0 THE WARNER & SWASEY COMPANY, OF CLEVELAND, OHIO, A CORPORATION OF OHIO INDICATOR Application filed December 23, 1929. Serial No. 415,904.

This invention relates to an indicator for indicating the rate of movement of a part of a machine, the indicator being of the general type described and claimed in a prior application filed in the name of William J. Burger, Serial No. 345,399, and in a prior application liled in the name of John J. N. Van Hamersveld, `Serial No. 409,411.

n indicator 0f this type is preferably utilized in connection with the control members or levers which control the rate of movement of the part in question, and though it may be utilized very advantageously on or in connection with various types of machines, it

- is especially useful when applied to a lathe in association with the levers which control the speed or rate of movement and the direction of movement lof the work spindle. For that reason, the invention, as in the prior applications referred to, is illustrated as applied to the headstock of a lathe in association with the levers controlling the work spindle. This indicator, as in the prior applications referred to, preferably includes two indicating devices or movable indicating members which by their conjoint movements make it possible for the operator to see at a glance the rate of movement of the controlled part regardless of the position of the several control levers or the order in which they are moved.

It is common in lathes to arrange the levers which control the work spindle at the top of the headstoclr, and it has been proposed raore recently to arrange part of the levers at the top and part of them at the front of the headstoclr, those at the top of the head stoclr projecting toward the front side of the machine and those on the front projecting upwardly. In either event, the operating ends of the levers are located so that they may be conveniently operated by the operator standing in front of the machine.

The arrangement and grouping of the control members or levers and the manner in which said members or levers are operatively connected or associated with the part t0 be controlled form per se no part of the invention covered by the present application but constitute the subject matter of a co-pending application of John J. N. Van l-lamersveld, Serial No. 514,649, tiled February 9, 1931.

The principal obj ect of the present invention is to provide an indicator for the purpose stated adaptable for the arrangement of levers last referred t0.

A further object is to provide certain improvements in the indicator itself.

The invention may be further briefly summarized as consisting in certain novel combinations and arrangements of parts and details of construction which will be described in the specilication and set forth in the appended claims.

In the accompanying sheets of drawings wherein I have shown a preferred and a modified construction, Fig. l. is a view partly in elevation and partly in section looking toward the front end of the headstock of a lathe with my improved indicator mounted on the headstock in association with the work spindle controlling levers, part of which are arranged on top of the headstock and part at the front side of the hcadstock; Fig. 2 is a fragmentary elevation looking at a part of the mechanism from the point o'l'view indicated by the line 2-2 of Fig. 1; llig.` 3 is a fragmentary plan view of 1 showing the two upper levers in certain relative positions; F ig. 4E is a similar view showing these levers in still other relative positions; Fig. 5 is a fragmentary view principally in section, similar to Fig. l, but showing the parts of the indicator in different positions than shown in Fig. 1, the positions of the indicating members corresponding to thc relative positions of the levers shown in Fig. 4;, whereas in Fig. 1 the indicating members are in positions corresponding to the relative posilevers.

tions of the levers shown in Fig. 3; Fig. 6i is a detail sectional view substantially along the line 6 6 of Fig. 1; Fig. 7 is a view corresponding to F 1 showing a modification; Fig. 8 is a sectional view substantially along the line 8 3 of Fig. 7 and Fig. 9 is a plan view of Fig. 7.

Referring now to the drawings, 10 represents the body of the headstock having a coverplate 10n and a front wall 10b. l have indicated the work spindle only generally by the reference character 11, but 1 have omitted,

'for the sake of clearness, the mechanism for rotating the work spindle at varying speeds in lopposite directions inasmuch as this mechanism, including al clutch and several sliding gear cones by which the spindle may be started and stopped or rotated in either direction at a plurality of speeds from a constan-t speed driving shaft, forms no part of the present invention and may assume widely different forms inthe arrangement and details of the driving parts. 1n the prior Burger application referred t0 ab ve, there is illustrated the complete movement transmitting mechanism inthe headstock, includ-ing three sliding gear cones, one being three-step gear cone and the other two being two-step gear cones, the arrangement illustrated being adapted for won; spindle control levers all arranged at the top of the headstock. Similar mechanism, including the identical parts but with a slightly diferent arrangement of some of the parts, may be employed with the arrangemen'tof the work spindle control levers herein illustrated. Y

As in therBurger and Van Hamersveld applications referred to above, 1 have illustrated four levers for controlling the work spindle, one being a clutch controlling lever and the other three being speed controlling This number of levers with a driving mechanism in the headstock involving a three-step gear cone and two two-step gear cones enables twelve different speeds to be imparted to the work spindle both for forward and reverse rotation. The levers refered to are designated 12,13, 14 and 15 in F igs.y 1 to 6. Levers 12 and 13 are mounted coaxially on the top of the headstock, the lever 12 being secured to a vertically disposed haft 16 and the lever 13 being secured to a leeve 17 which surrounds the shaft, both the leeve and the shaft extending through a boss iS-projecting upwardly from the top of the headstock, as illustrated in 1. The

clutch controlling lever 15 at the front of the headstock is secured to a horizontally disposed shaft 19, and the speed controlling lever 14 is secured to a sleeve 2O which surrounds the shaft both the shaft and the sleeve extending through a. horizontally projecting boss v21 on the lower front side of the headstock. 'lf-he upper levers 12 and 13 project forwardly and the front levers 14 and 15 project upwardly, their operating ends being closely associated and in convenient reach of the operator standing in front of the headstock. r)The inner ends of the rock shafts 16 and 19 and of the sleeves 17 and 2O will be provided with the usual clutch and gear cone shifting members.

The indicator of Figs. 1 to 6 consists of two indicating devices 22 and 23, tl e former being provided with an upper row and a lower row of spaced indicia 2e (see Figs. 5 and 3), the indicia preferably being in the form of numerals which, when the indicator is applied to the headstock of a lathe, indicate the revolutions per minute Vof the work spindle. 1t is not essential, however, that the indicating characters be in the fermy of numerals as any other suitable indicia which are directly or indirectly indicative of the rate of movement of the work spindle or `other controlled part may be employed. rlhe other indicating device 23 has an opening or window 25 through which the indie-ia may be observed for any particular speed of the work spindle. There .may be provided below the window 25 a second opening 26. so as to avoid having any of the indicia hidden from theview of the operator when the window is in line with the upper row ef indicia 2e, though this additional opening is not essential to the' invention and may be omitted if unnecessary for the convenience of the operator. 1t might be here stated thatthe indicating device v22 is capable of being rocked about an axis and may also be elevated so as torbring either row of indicia in line with the window 25, and the indicating device 23 is capable of being rocked about an axis to position the window preferably in `one of three different positions, the two movements which may be imparted to the indicating device 22 and the movement which may be imparted to the indicating device 23 making it possible to give a reading vorl visual indication of any one of the twelve permissible speeds.

Th y indicating` device 22 has at the front a segment or arc-shaped portion 27 on which the indicia are mounted (see particularly Figs. 3, 4 and 5) and inwardly of the segment it has a boss 28 fixed to the upper end of a pin 29 slidably mounted. in a sleeve-like boss 30 extending downwardly from a bracket 31 which is mounted for rocking movement on the top of the headstock. 1n this instance.,

this bracket is mounted on an integral forward extension of the cover plate 10a of the headstock, but this is not essential as it may be mounted on a support constituting a part of an attachment which may be suitably secured to a portion ofthe headstock. rEhe bracket 31 carries between a pair of upstanding ears on a pin 32 a lever 33 which is mounted on the pin midway between its ends. The forward end of the lever has a pin and slot ,itwill cause the indicating;-

connection indicated at 34 with the rearward portion of the indicating,- device Q2 so that when the lever is rocked about the axis oi" pin 3Q the indicating device will be raised or lowered, as the case may be, along with the pin 29. The opposite end of the lever is forked, the forked end straddling a portion ot a pin 35 between two shoulders of the pin, this pin being carried by the speed controlling' lever i3 and projecting upwardly above the lever i3, as viewed in Fig. l. lie lever normally tends to stand in the posit-ion shown in Fig. l with its rear end elevated as gravity acting en the indicating device 22 and pin Q9 would tend to hold the parts in the relative positions shown, but the act-ion of gravity in this respect may be supplen'iented by a suitable spring, and in Fig. l l have shown a spring` actuated plunger 3G for this purpose.

On account of the forked connection between the rear end of the lever 33 and the pin 35, it will be obvious that when lever l?? rocked or swung from one position to another, as, Vt'or eilaniple, troni the position shown in Fig. 3 to the position shown in Fig'. Ll, or vice versa.. tle lever 33, brac tet 3l, and the indil eating' device Q2 will swing as a unit about the axis et the pin 2Q, thus moving` the curved tace or the segment carrying the indicia one relative to the window 25. The lever l2 has a. cannning extension 3"? which is adapted to enga-ge the upper end ot "he )in rllhe two nositions of lever l2 are b l l indicated in Figs. 3 and 4, and the throws ot the levers l2 and 1.3 are such that when lever l2 is in the position shown in Fig. 3 lever 13 may be moved trein one ot its operative positions to the other without having the position of the pin 35 changed by the cannning eX- tension 87 ot the lever l2. That is to say, the nioveinent et lever 13 troni one position to another will simply canse a horizontal roel:- ing movement ot the indicating device 22. On the other hand, when lever 'l2 is nioved to its other operative position shown in Ll, the camming extension 37 engages and depresses the pin to the position shown in ll 5. This eausesthe lever 33 be recited vertically from the position shown in Fig. l

1r.` to the position shown in Fig. and elevates the indicating device 22 to the position shown in Fig. 5, 7ith the lower row of indicia in line wth the window 25. It lever i3 is rocled when lever l2 is in the pes ion shown in Fig. device 22 to he rocked as before, except that this indicating device will be retained in its opper position shown in Fig'. 5 as long` as lever if) reinains in the position shown i 7lie'. el.

liever l5 is a clutch controlling lever which has no eiiect on the indicator, but the speerf controlling lever le wh'ch, along;` with the le ver l5, is mounted in iront ot the headst cli, as betere explained, shifts the indicating' device Q3 when it (lever 14) is nioved from one operating position to another. In order that this may be accomplished, the indicating; device 23 is provided at its inner en d beneath the headstoclr extension on which the ln'icli'ct is mounted with a cup-like portion '58 having" a bearing :tor rocking movement on the lower end ot the sleevelilie boss BO et the lnnchet 3l. it also encloscs a nut 8!) which screwed onto a portion ot the sleeve-like extension -lll ot the ln'aclfet 2:31, to hold 'trie bracket against upward movement on its support. rll`he ,lovfcr part ot the cup-like portion 38 is torlned wl a. boss which is pinned or otherwise seein, to the ripper ond ot a verticali;7 disposed roel; sha'l't i0 which is mounted 'l'or rocking,r inovev nient in a. suitable support con@latinol in ".t instance oi? a boss /l-l iorined on the -front wall oit the headstocli. Obviously, this snnport for the rock shaft Ll() may be a separate ineinber att-ached to the iront wall of the headstoclt. This rock shalt is capable ol" a roching movement only, being hel l from endl movement in its support Lll. Secured to the lower end ot this roel; sl .lit Ll() is a iorlied ai l2 liawr'ingI a forwardly proj ectinpr forked portion ornied b v l ned arin l2 and the iinlcating device 23 have three diilerent positions. In this instance, the lower port-ion oi the en pport il for the roel; shaft el() is provided with a dependingl ilangge open at the front, and the laces oft this flange are l "erallv forward i machined and are adapted to be engagea the arins il?) et the -forked brach the latter is in its two entreine posi cated by dotted lines in Fig.

The levers 19 and ll are each two-position levers, and the tlirows oi 'these levers and the proportioning ot 'the parte associated with the indicating device are such that as the levers l2 and i3 are manipulated the indicating,` device 22 will be ,given a lateral f-iwinging or rocking` movement about the asis of the pin 29 equivalent to one space on the indicia covered 'ace ot ineinber 22 and will be inoved vertically, either up or donn as the case inay be, so as to position one row of the indicia or the other in iront of the window. On the other hand, the indi -Milug.;- de e 23 is not only swung; or rocked laterali)T to three different positions when the lever le is moved to its three positions, but the throw of this lever and the proportioninp; ot the parts which actuate the lnenibcr 23 are such that when the lever lil is moved 'troni one position to another, the window of the indicating device 23 will be moved a distance equal to two spaces on the indicia covered face of the in 1 no, ...nl

dicating device 22. By this arrangement any one ci 'the twelve permissiblespeeds of the work spindle will be indicated by the positioning of the proper speed indica-ting indicia` behind the window 25 through the manipulation of the speed controlling levers.

'ln Figs. 7, 8 and 9 l have shown a moditication wherein the same results are obtained as described above with two indicating devices of the same general type as eX- plained above but arranged and operated somewhat difl'erently with, however, the same arrangement of levers as in the construction iirst described. ln this instance the tour levers are designated 12, 13a, 14a and 15, these corresponding in their arrangement, mounting and function to the levers 12, 13,

' 1d and 15 respectively. The indicia carrying indicating membereil, which corresponds to the member 22 ci the described construction, is pivotally mounted by means ot a pin 5 on the lower side oi: theilever 13a, which, along with the lever 12, is mounted on the top of the headstock. Obviously, when the lever is swung horizontally it will swing or rock the member le horizontally, and the throw ot the lever and the proportioning ot the parte are such that as the lever 13a is swung from one operative position to the other the front segment-shaped tace l5 of this indicating device will move through a distance equal to one space in so tar as the spacing of the indicia is concerned.

This indicating device la has an upwarc extension el? which projects through a slot in the lever 13, as indicated in TEig. 9, and is adapted to be engaged by a cam i8 in the torni ot an extension on the lower side of the lever 12PL which is mounted coaXially with the lever 13a. The arrangement is such that when the lever 12a is in lits right-hand position, indicated in Fig. 9, the extension 47 ot the indicating device all: engages the cam i8 of the lever 12L and holds the forward end of the indicating device in lowered position, as indicated in Fig. 7, so that the upper row of indicia 'lies opposite the window to be referred to, as shown in Fig. 8, and while lever 12a occupies the position just stated, the lever 13EL can be moved from one operative position to the other without changing the elevation of the forward end of the indicating devicer fill. However, when lever 12a is thrown to its left-hand position, the cam [l is moved laterally romthe range of movement ot the extension 47, whereupon a spring acting on a plunger 49 elevates the forward end of the indicating device le against a stop on tle lower side of lever 13a so'as to bring the lower rowvoi2 indicia opposite the window and the indicating device stays in the position just stated while the lever 13a is swung from one operative position to the other as long as the lever 12L remains in its lett-hand position.

The other indicating device is in the form of an arm 51 which has sliding engagement on the cover plate 10a of the headstoclr. It is provided at its irmer end with a hub portion 52 which has a' bearing for rocking movement on a hub 53 forming a portion of the cover plate 10a and located immediately beneath the hub of the lever 13a. t its torward end, the arm 51 has a downward eXtension 54 which may, it' desired, have an inwardly extending lip `.'35 to slidingly engage the under side ot the projecting portion ot the cover plate 101 as indicated in Fie'. 7. The lower end of this eXtension is torlred and the forked ends straddle a pin 56 extending inwardly from the three-position speed controlling lever 148' mounted coaXially with the clutch Vcontrolling lever 15EL on the front of the headstock. The upper or horizontal part oi this arm carries a window 57 through which either row of indicia may be viewed, and below this window there may be another opening so that none ot the indicia characters will be obstructed by the window supporting member, regardless of whether the tron-t end ot the indicating device is elevated or lowered. The arrangement is such that as the lever 11i-a is moved from one ot its three operative positions to another position, the indicating device 51 will be roclred and move the window 57 a distance equivalent to two spaces of indicia precisely as is the case with the construction tirst described.

With this arrangement, as before, regardless of which levers are manipulated or the order in which they are manipulated, the particular speed or rate of rotation ot the work spindle will be indicated by the proper indicia standing behind the window 57. i

Thus it will be seen that I have provided an indicator for the purpose described, with the parts arranged in two dilierent ways and associated with control levers having an entirely different arrangement than in the applications first referred to, and while I have show only two forms of my invention, other changes and modifications maybe made without departing trom the spirit and scope of the invention as set forth in the appendedl claims.

Having thus described my invention, I claim: j

1. An indicating device for indicating the rate ot movement of a part ofv a machine associated with `members for controlling such part, said device being operated by said members, one ot which has a plane of movement at an angle to the plane ot movement of another.

2. An indicating device for indicating the rate of movement of a part of a machine associated with members for controlling such part, said device being movable in two ditierent directions by said members, one of which moves in a plane at an angle to the plane of movement of another.

3. An indicator for indicating the rate of movement of a part oi' a machine associated with members for controlling such part, said indicator including tivo relatively movable devices, one of which is operated by said members, one ot' the latter being movable in a plane an angle to the plane olf another.

4. ifi-.n indicator for indicating the rate oi movement of a part oi' a machine associated with members for controlling such part, said indicator comprising two movable devices which are operated by said members, one movable in a plane at an angle to plano of movement of the other.

5. An indicator for indicating the rate of movement el a part of a machine associated with a plurality ot members tor controlling such part, said indicator being composed oi' tiro movable indicating devices, one movable in tvvo different directions and both moved by said members, at least one of Which is movable in a plane at an angle to the plane ot movement ot another of said members.

6. The combination with a part of a. machine Whose rate ot movement is to be indicated, of control members for such part, a stationary member adjacent said control members, and an indicator including two movable indicating` devices adapted to be actuated by certain of said control members, one of said devices having a mounting on said stationary member.

7. The combination With a part of a mo.- chine Whose rate of movement is to be indicated, oi control members for such part, a stationary member adjacent said control members, and an indicator including movable indicating members adapted to be actuated by certain of said control members, one of said indicating members having a mounting on said stationary member and another indicating member being supported by one of said control members.

8. The combination with a part of a machine vvhose rate ot movement is to be indicated, of control members for such part, a stationary member adjacent said control members, and an indica-tor including movable indicating devices adapted to be actuated by certain of said control members, one of said devices being mounted for rocking movement on said stationary member.

9. The combination with a part oit' a machine Whose rate of movement is to be indi` cated, of control members for such part, a stationary member adjacent said control members, and an indicator including movable members adapted to be actuated by certain of said control members, one of said members of the indicator being mounted for rocking movement on said stationary member and another having a mounting on one of said control members.

10. The combination With a lathe having a headstock with a Work spindle and members `for controlling the rate of movement of the Work spindle, of an indicator associated with said control members and comprising` a plurality of relatively movable members including one mounted on the headstoclr and another supported by one ot the control members.

l1. The combination with a lathe having a headstock with a Work spindle and control members for controlling its rate ot movement, of an indicator for indicating the rate ot movement ot the Work spindle and comprising a pluralilf.T of movable members adapted to be shifted by certain oi said control members, one of said movable members being mounted on the headstock and another having a mounting on one of said control members.

l2. The combination With a lathe having a headstock with a Work spindle and with control members mounted partly on top oi" the headstoclr and partly in front of the headstoclr for controlling the rate of movement oi the Work spindle, of an indicator :For indicating` the rate oi movement ol. the work spindle and operated by said control members.

13. The combination with a lathe having a headstock with a work spindle and with control members mounted partly on top of the headsloclc and partly in front of the head stock for controlling the rate oi. movement ot the Work spindle, of an indicator for indi cating the rate of movement oi the Work spindle and operated by said control members, said indicator including a device movable in two directions by certain of said control members.

14T. The combination with a lathe having a heacstoclr with a Work spindle and With control members mounted partly on top ot the headstocl and partly in 'liront ol the headstoclr for controllingI the rat-e ot movement of the Wol-lr spindle, ot an indicator tor indicating the rate ot movenicnt ol the Worlt spindle and operated by said control. members, said indicator including relatively movable devices, one mounted on the headstoclr and another on one of the control members.

15. The combination with a lathe having aheadstocll; with a vvorlr spindle and With control members mounted partly on top of the headstock and partly in iront oit the headstoclr for controlling the rate oit movement of the wor t spindle, ot an indicator for indicating the rate oli" movement of the Work spindle and operated by said control members, said indicator including movable members, one mounted for movement by a lever at the top oit the headstock and another mounted for movement by a lever at the front of the headstoclr.

16. The combination with a lathe having a headstock with a Work spindle and with control. members mounted partly on top of lll) l lil-l the headstoek and partly in front Aof the headstock for controlling the rete of movement of the Work spindle, of an indicator for indieating the rate o movement of the Work spindle and operated by said control members, said indicator including movable de- -yices adapted to be shifted by control members both at the top and at the front or' the head-Stock and supported adjacent thereto for' rocking movement.

In testimony whereof, I hereunto zifix my signature.

JOHN J. N. VAN HAMERSVELD.

mee'jese 

